WO2007029410A1 - ポリアリールアミンを用いた有機エレクトロルミネッセンス素子 - Google Patents
ポリアリールアミンを用いた有機エレクトロルミネッセンス素子 Download PDFInfo
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- H—ELECTRICITY
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/151—Copolymers
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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- C09K2211/1003—Carbocyclic compounds
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/14—Macromolecular compounds
- C09K2211/1408—Carbocyclic compounds
- C09K2211/1433—Carbocyclic compounds bridged by heteroatoms, e.g. N, P, Si or B
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
Definitions
- the present invention relates to the field of organic electoluminescence, and more specifically, an organic material produced by using a specific polymer for a hole injection layer or a transport layer and using a specific low molecular weight material for a light emitting layer.
- the present invention relates to an electo-luminescence element.
- the organic electoluminescence device of the present invention can be used for a flat light emitter such as a flat panel display, a copying machine, a printer, a light source such as a backlight of a liquid crystal display or instruments, a display board, a marker lamp, and the like.
- Organic-electric luminescence elements may be abbreviated as polymers such as polyfluorene and soluble PPV (poly (p-phenylenevinylene)), which can be used for spin coating, ink jet, etc.
- Polymers such as polyfluorene and soluble PPV (poly (p-phenylenevinylene)), which can be used for spin coating, ink jet, etc.
- Manufactured by wet methods and dry methods such as vacuum deposition using low molecular weight materials.
- an organic EL device having a plurality of organic thin film layers has been manufactured by a wet method.
- both the hole injection layer and the light emitting layer are made of a polymer material (for example, patents). Reference 1).
- polymer materials have a molecular weight distribution, and are difficult to purify and difficult to achieve high purity.
- the color purity of the luminescent color, luminous efficiency, luminance and luminance There was a problem with half-life.
- low-molecular materials can be easily purified by known purification methods, and when used in the light emitting layer of an organic EL device, the color purity, light emission efficiency, and luminance of the emitted color are superior to polymers, and the luminance is reduced by half. Long time is an advantage. However, depending on the material constituting the hole injection layer or the hole transport layer adjacent to the light emitting layer, good light emitting performance may not be exhibited.
- Patent Document 1 International Publication WO2004 / 84260 Disclosure of the invention
- the present invention has been made to solve the above-described problems, and has an object to provide an organic electoluminescence device using polyarylamine.
- the manufacturing process is simplified and the screen size is increased. And to improve device performance.
- the present inventors have sandwiched at least one organic compound layer including at least a light emitting layer between a pair of electrodes composed of an anode and a cathode.
- the organic compound layer has a hole transport layer and / or a hole injection layer, and the polyarylamine represented by the following general formula (1) is the hole transport layer and / or the hole injection layer.
- the present invention has been completed by finding that the organic-electric-luminescence element contained in can achieve the above object.
- Ar is each independently a substituted or unsubstituted aryl group having 6 to 40 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 40 carbon atoms.
- Ar is each independently a substituted or unsubstituted divalent arylene group having 6 to 40 carbon atoms.
- a, b, c and d are each independently an integer of 1 to 2, and e is an integer of 0 to 2.
- n is an integer of 3 or more.
- the present invention provides the organic electoluminescence device wherein the hole transport layer and / or the hole injection layer mainly contains the polyarylamine, and the light emitting layer mainly comprises an anthracene derivative, pyrene derivative and / or fluorene.
- the organic electroluminescent device selected from derivatives, the organic electroluminescent device containing a dopant in the light emitting layer, the hole transport layer and / or the hole injection layer are formed into a wet film, and the light emitting layer is formed into a wet film.
- the organic electroluminescence device, wherein the organic electroluminescence device, and the hole transport layer and the Z or hole injection layer are formed into a wet film and the light emitting layer is formed by vapor deposition, are provided.
- an organic electoluminescence device having a light emitting layer made of a low molecular weight material
- the device performance could be improved by using a polyarylamine having a specific structure for the hole transport and injection layer.
- FIG. 1 is a cross-sectional view showing one embodiment of an organic EL device of the present invention.
- the organic electoluminescence device of the present invention is an organic EL layer in an organic EL device in which at least one organic compound layer including a light emitting layer is sandwiched between a pair of electrodes composed of an anode and a cathode.
- Ar is a substituted or unsubstituted aryl group having 6 to 40 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 40 carbon atoms, Ar
- a, b, c and d are each independently an integer of 1 to 2
- e is an integer of 0 to 2.
- n is an integer of 3 or more.
- examples of the aryl group having 6 to 40 nuclear carbon atoms of Ar include a phenyl group, a 2-pi'uelinole group, a 3-pi'huyelinole group, a 4-pi'hueurenore group, a tenolehue group.
- examples of Ar heteroaryl groups having 3 to 40 nuclear carbon atoms include 1 pyrrolyl group, 2 pyrrolyl group, 3 pyrrolyl group, birazinyl group, pyrimidyl group, pyridazyl group, 2 pyridininore Group, 3-pyridinyl group, 4 pyridinino group, 1indrino group, 2dryl group, 3-indolyl group, 4-indolyl group, 5-indolyl group, 6-indolyl group, 7-indolyl group, 1 isoindolyl group, 2 isoindolyl group Group, 3 isoindolyl group, 4 isoindolyl group, 5 isoindolyl group, 6 isoindolyl group, 7 isoindolyl group, 2 furyl group, 3 frinore group, 2 benzofuranyl group, 3 benzofuranyl group, 4 benzofuranyl group,
- examples of Ar to Ar which is a substituted or unsubstituted divalent arylene group having 6 to 40 carbon atoms, include:
- the structure with the hydrogen atom removed is included.
- Ar and Ar to Ar are aryl groups, arylene groups, heteroaryl groups.
- Examples of the substituent of the alkyl group include an alkyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, and particularly preferably 1 to 8 carbon atoms such as methyl, ethyl, And isopropyl groups (preferably having 2 to 20 carbon atoms, more preferably, isopropylene, t-butyl, n_octyl, n-decyl, n_hexadecyl, cyclopropyl, cyclopentyl, cyclohexyl, etc.).
- an alkyl group preferably having 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, and particularly preferably 1 to 8 carbon atoms such as methyl, ethyl, And isopropyl groups (preferably having 2 to 20 carbon atoms, more preferably, isopropylene, t-butyl, n_octyl, n-decyl, n
- An amino group (preferably having a carbon number) The number of carbon atoms is 0 to 20, more preferably 0 to 12, and particularly preferably 0 to 6. Examples thereof include amino, methinoreamino, dimethylamino, jetylamino, diphenylamino, dibenzylamino and the like.
- Alkoxy groups preferably having 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, particularly preferably 1 to 8 carbon atoms, such as methoxy, ethoxy, butoxy, etc.
- aryloxy groups Preferably it has 6 to 20 carbon atoms, more preferably 6 to 16 carbon atoms, and particularly preferably 6 to 12 carbon atoms, and examples thereof include phenyloxy, 2_naphthyloxy, etc.), an asinole group (preferably carbon number) 1 to 20, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, and examples thereof include acetyl, benzoyl, formyl, bivaloyl and the like, and an alkoxycarbonyl group (preferably having a carbon number).
- An oxycarbonyl group preferably having 7 to 20 carbon atoms, more preferably 7 to 16 carbon atoms, particularly preferably 7 to 10 carbon atoms, such as phenylcarbonyl
- an acyloxy group Preferably it has 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, particularly preferably 2 to 10 carbon atoms, and examples thereof include acetoxy, benzoyloxy, etc.), an amino group (preferably 2 to 2 carbon atoms).
- alkoxycarbonylamino groups preferably 2 to 20 carbon atoms, more preferably Has 2 to 16 carbon atoms, particularly preferably 2 to 12 carbon atoms, and examples thereof include methoxycarbonylamino and the like.
- An mino group (preferably having a carbon number of 7 to 20, more preferably a carbon number of 7 to 16, particularly preferably a carbon number of 7 to 12, such as phenylcarbonylamino), a sulfonylamino group ( Preferably, it has 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, and examples thereof include methanesulfonylamino-containing benzenesulfonylamino, etc.), sulfamoyl group (preferably carbon The number is 0 to 20, more preferably 0 to 16, and particularly preferably 0 to 12, and examples thereof include sulfamoyl, methylsulfamoyl, dimethylsulfamoyl, phenylsulfamoyl and the like.
- a carbamoyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably carbon number:! To 12), for example, rubamoyl, methylcarbamoyl, jetylcarbamoyl, Examples include phenylcarbamoyl.
- An alkylthio group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as methylthio, ethylthio, etc.), an arylthio group (preferably).
- substituents include imidazolyl, pyridyl, quinolinole, frinoleole. , Phenyl, piperidyl, morpholino, benzoxazolyl, benzimidazolyl, benzothiazolyl, carbazolyl, etc.), silyl group (preferably 3 to 40 carbon atoms, more preferably 3 to 30 carbon atoms, particularly preferably , Having 3 to 24 carbon atoms, such as trimethylsilyl, triphenylsilyl, etc.). These substituents may be further substituted. When there are two or more substituents, they may be the same or different. If possible, they may be linked to each other to form a ring.
- the polyarylamine of the present invention is preferably an organic EL device material, and is particularly suitable for a hole transport material for an organic EL device and a hole injection material for an organic EL device.
- the polyarylamine of the present invention can be used as a hole injection material or a hole transport material, but a compound having a phenylenediamine skeleton is a hole injection material, and a compound having a diphenylenediamine skeleton is a hole injection material. It is preferable to use it as a transport material.
- the hole transport material and the hole injection material of the EL device of the present invention are formed by a wet process.
- the light emitting layer of the organic electoluminescence device of the present invention is mainly selected from an anthracene derivative, a pyrene derivative and / or a fluorene derivative. Suitable anthracene derivatives, pyrene derivatives and / or fluorene derivatives are shown below. [Chemical 4]
- a 1 and A 2 are aryl groups having 6 to 50 nuclear carbon atoms which may have a substituent, or heteroaryls having 5 to 50 nuclear atoms which may have a substituent. It is a group. A 1 and A 2 are not the same. n is an integer of 1 or 2.
- a 3 to A 5 are aryl groups having 6 to 50 nuclear carbon atoms which may have a substituent, or 5 to 50 nuclear atoms optionally having a substituent. This is a heteroaryl group.
- a 3 to A 5 may be the same or different.
- a 6 and A 7 are anthracenylene or pyrenylene.
- a 6 and A 7 may be the same or different.
- m is an integer between :!
- R 1 and R 2 may be the same or different and are hydrogen or an alkyl group having 1 to 10 carbon atoms.
- R 3 and R 4 may be the same or different hydrogen, a phenyl group or a biphenyl group substituted with an alkyl group having 1 to 6 carbon atoms. It is.
- a 6 and A 7 are the same, R 1 and R 2 are the same, and are an alkyl group having 4 to 10 carbon atoms, and R 3 and R 4 are the same.
- L and L ' are each a substituted or unsubstituted phenylene group, a substituted or unsubstituted naphthalenylene group, a substituted or unsubstituted fluorenylene group, a substituted or unsubstituted dibenzosilolylene. It is a group.
- a 8 and A 9 are each a substituted or unsubstituted aromatic group having 6 to 50 nuclear carbon atoms.
- p and q are integers from 0 to 2
- r is an integer from:! to 4
- s is an integer from 0 to 4.
- the above-described anthracene derivative, pyrene derivative and / or fluorene derivative can be used as a host material. Furthermore, it is preferable to contain a styrylamine compound and / or an arylamine compound as a dopant contained in the light emitting layer.
- Ar 1 is a group selected from a phenyl group, a biphenyl group, a terphenyl group, a stilbene group, and a distyryl group.
- Ar 2 and Ar 3 are each a hydrogen atom or a carbon number of 6 to 20). Is an aromatic group, and eight to eight! " 3 may be substituted.
- P is an integer of 1 to 4. More preferably, at least one of Ar 2 or Ar 3 is substituted with a styryl group.
- examples of the aromatic group having 6 to 20 carbon atoms include a phenyl group, a naphthyl group, an anthranyl group, a phenanthryl group, and a terphenyl group.
- arylamine compound a compound represented by the following formula (2) is preferable.
- Ar 4 to Ar 6 are substituted or unsubstituted aryl groups having 5 to 40 nuclear atoms.
- examples of the aryl group having 5 to 40 nucleus atoms include, for example, phenyl group, naphthyl group, chrysenyl group, naphthacenyl group, anthranyl group, phenanthryl group, pyrenyl group, cololinole group, biphenyl group.
- Preferred substituents for the aryl group include alkyl groups having 1 to 6 carbon atoms (ethyl group, methyl group, isopropyl group, n propyl group, s butyl group, t butyl group, pentyl group, hexyl group, cyclopentyl group).
- the light emitting layer of the EL device of the present invention can be formed by wet as well as vapor deposition of the light emitting material.
- a coating method such as a dubbing method, a spin coating method, a casting method, a bar coating method, or a mouth coating method can be applied. .
- solvent used in this wet film formation examples include halogenated hydrocarbon solvents such as dichloromethane, dichloroethane, chlorophenol, carbon tetrachloride, tetrachloroethane, trichloroethane, black benzene, dichlorobenzene, chlorotolenene, Ethereal solvents such as butyl ether, tetrahydrofuran, dioxane, and anisole, alcohols such as methanol, ethanol, propanol, butanol, pentanole, hexanol, cyclohexanol, methinorescerosolev, ethinorescerosolev, ethylene glycol Solvents, benzene, toluene, xylene, ethylbenzene, tetralin, dodecylbenzene, hexane, octane, decane and other hydrocarbon solvents, ethoxy
- the element configuration of the organic EL element can be exemplified by the following configuration. However, it is not limited to these.
- the hole injection / transport layer is a layer that assists hole injection into the light-emitting layer and transports it to the light-emitting region, and has a high ion mobility and a small ionization energy of 5.5 eV or less. .
- a material that transports holes to the light-emitting layer with a lower electric field strength is preferred as such a hole injection / transport layer.
- the mobility force of holes is, for example, 10 4 ⁇ : When applying an electric field of OV / cm, At least 10 4 cm 2 ZV.
- the material for forming the hole injection / transport layer preferably contains the polyarylamine of the present invention.
- the polyarylamine of the present invention has been used as a charge transport material for holes in photoconductive materials, and used as a hole injection layer for organic EL devices.
- Any known medium force can be selected and used.
- Polysulfonic acid (PEDOT'PSS) and the like specific examples include triazole derivatives (see US Pat. No.
- polysilane JP-A-2-204996
- aniline-based copolymer examples thereof include conductive polymer oligomers (particularly thiophene oligomers) disclosed in JP-A-2-282263 and JP-A1-211399.
- Porphyrin compound, aromatic tertiary amine compound and styrylamine compound (US Pat. No. 4,127, 412) Specification, JP-A-53-27033, 54-58445, 54-149634, 54-64299, 55-79450, 55-144250, 5 6-119132, 61-295558, 61-98353, 63-295, 695, etc.), in particular, aromatic tertiary amine compounds are preferably used.
- NPD Bifurinole
- MTDATA tris (N, which is composed of three triphenylamine units described in JP-A-4-308688 connected in a starburst type) — (3-Methylphenyl) -N-phenylamino) triphenylamine
- inorganic compounds such as p-type Si and p-type SiC can also be used as the material for the hole injection layer.
- the hole injection / transport layer may be composed of one or two or more layers of the above-mentioned materials, or a layer in which a hole injection / transport layer composed of another compound is laminated. You can do it.
- the organic semiconductor layer is a layer for helping the injection of holes or electrons into the emitting layer, and an 10- 1Q S ZCM more conductivity is preferred.
- Examples of the material of such an organic semiconductor layer include thiophene oligomers, conductive oligomers such as arylamine amines disclosed in JP-A-8-193191, and conductive materials such as arylamine dendrimers. Dendrimers and the like can be used.
- the electron injection layer is a layer that assists the injection of electrons into the light emitting layer, and has a high electron mobility
- the adhesion improving layer is made of a material that has particularly good adhesion to the cathode among the electron injection layers. It is a layer.
- As a material used for the electron injecting layer 8-hydroxyquinoline, a metal complex of the derivative thereof, a oxadiazole derivative is preferable.
- metal complex of 8-hydroxyquinoline or a derivative thereof include metal chelate oxinoid compounds containing a chelate of oxine (generally 8_quinolinol or 8-hydroxyquinoline).
- metal chelate oxinoid compounds containing a chelate of oxine generally 8_quinolinol or 8-hydroxyquinoline.
- tris (8-quinolinol) aluminum (Alq) can be used for the electron injection layer.
- examples of the oxadiazole derivative include an electron transfer compound represented by the following formula.
- Ar 1 ′, Ar 2 ′, A, Ar 5 ′, Ar 6 ′, and Ar 9 each represent a substituted or unsubstituted aryl group, which may be the same or different from each other.
- Ar 4 ′, Ar 7 ′ and Ar 8 ′ represent a substituted or unsubstituted arylene group, which may be the same or different from each other.
- the aryl group is a phenyl group, Biphenyl group, anthranyl group, perylenyl group, pyrenyl group and the like can be mentioned.
- Examples of the arylene group include a phenylene group, a naphthylene group, a biphenylene group, an anthranylene group, a peryleneylene group, and a pyrenylene group.
- examples of the substituent include an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, and a cyan group. This electron transfer compound is preferably a thin film-forming compound.
- electron transfer compound include the following.
- an organic EL device it is possible to effectively prevent leakage of electric current and improve electron injection properties by further providing an electron injection layer composed of an insulator or a semiconductor between the cathode and the organic layer. That power S.
- At least one metal compound selected from the group consisting of alkali metal chalcogenides, alkaline earth metal chalcogenides, alkali metal halides, and alkaline earth metal halides may be used. preferable. If the electron injection layer is composed of these alkali metal chalcogenides or the like, it is preferable in that the electron injection property can be further improved.
- preferred alkali metal chalcogenides include, for example, LiO, K0, NaS, NaSe, and NaO.
- Preferred alkaline earth metal chalcogenides include, for example, CaO, BaO, SrO, Be. ⁇ BaS and CaSe are listed.
- Preferred alkali metal halides include, for example, LiF, NaF, KF, LiCl, KC1, and NaCl.
- Examples of preferable alkaline earth metal halides include fluorides such as CaF, BaF, SrF, MgF and BeF, and halides other than fluorides.
- the semiconductor Ba, Ca, Sr, Yb, Al, Ga, In, Li, Na, Cd, Mg, Si, Ta,
- the inorganic compound constituting the electron transport layer is preferably a microcrystalline or amorphous insulating thin film. If the electron transport layer is composed of these insulating thin films, a more uniform thin film is formed. Pixel defects such as spots can be reduced. Examples of such inorganic compounds include the aforementioned alkali metal chalcogenides, alkaline earth metal chalcogenides, alkali metal halides and alkaline earth metal halides.
- an organic EL element applies an electric field to an ultra-thin film, pixel defects are likely to occur due to leakage or short circuit. In order to prevent this, it is preferable to insert an insulating thin film layer between the pair of electrodes.
- Examples of the material used for the insulating layer include aluminum oxide, lithium fluoride, lithium oxide, cesium fluoride, cesium oxide, magnesium oxide, magnesium fluoride, oxidizing power, ruthenium, calcium fluoride, aluminum nitride, titanium oxide, Examples thereof include silicon oxide, germanium oxide, silicon nitride, boron nitride, molybdenum oxide, ruthenium oxide, and vanadium oxide. Moreover, you may use these mixtures and laminates.
- each organic layer forming the organic thin film layer of the organic EL device of the present invention is not particularly limited. Generally, if the film thickness is too thin, defects such as pinholes are generated, or if the film is too thick. Usually, the range of a few nm to lxm is preferred because a high applied voltage is required and the efficiency becomes poor.
- the anode of the organic EL element plays a role of injecting holes into the hole injection / transport layer or the light emitting layer, and it is effective to have a work function of 4.5 eV or more.
- the anode material tin-doped indium oxide alloy (ITO), tin oxide (NESA), gold, silver, platinum, copper and the like can be applied.
- the anode can be produced by forming a thin film from these electrode materials by a method such as vapor deposition or sputtering.
- the transmittance of the anode for light emission is preferably greater than 10%.
- the sheet resistance of the anode is preferably several hundred ⁇ / mouth or less.
- the film thickness of the anode is a force depending on the material, and is usually selected in the range of 10 nm to l x m, preferably 10 to 200 nm.
- the cathode of the organic EL element plays a role of injecting electrons into the electron injection / transport layer or the light emitting layer, and has a low work function (4 eV or less) metal, alloy, electrically conductive compound, and a mixture thereof.
- Specific examples of such electrode materials and Examples thereof include sodium, sodium-potassium alloy, magnesium, lithium, magnesium silver alloy, aluminum / aluminum oxide, aluminum lithium alloy, indium, and rare earth metals.
- the cathode can be produced by forming a thin film of these electrode materials by a method such as vapor deposition or sputtering.
- a method such as vapor deposition or sputtering.
- the transmittance of the cathode for light emission is greater than 10%.
- the sheet resistance as a cathode is preferably several hundred ⁇ / mouth or less, and the film thickness is usually 10 nm to l zm, preferably 50 to 2 OOnm.
- an organic EL element is produced on a light-transmitting substrate.
- the translucent substrate is a substrate that supports the organic EL element, and is preferably a smooth substrate having a light transmittance in the visible region of 400 to 700 nm of 50% or more.
- a glass plate, a polymer plate, etc. are mentioned.
- the glass plate include soda lime glass, barium strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, barium borosilicate glass, and quartz.
- the polymer plate include polycarbonate, acrylic, polyethylene terephthalate, polyethersulfide, and polysulfone.
- a glass substrate having a thickness of 25 mm ⁇ 75 mm ⁇ 1.1 mm and having an ITO transparent electrode (Zomatic) was ultrasonically cleaned in isopropyl alcohol for 5 minutes, followed by UV ozone cleaning for 30 minutes.
- Polyethylene dioxythiophene ⁇ polystyrene sulfonic acid (PEDOT ⁇ PSS) used for the hole injection layer was formed on the substrate by spin coating to a thickness of 1 OOnm.
- a hole transport layer having a thickness of 20 nm was formed by spin coating with a toluene solution (0.6 wt%) of the following polymer 1 (molecular weight: 145000) and dried at 170 ° C. for 30 minutes.
- Alq film 8-quinolinol aluminum film
- Alq Li film
- metal A1 was vapor-deposited to form a metal cathode to form an organic EL light emitting device. This device emits blue light.
- Table 1 shows the voltage and luminous efficiency (cdZ A) at 100 cd / m 2 , and the luminance half time at the initial luminance lOOOcdZm 2 .
- a device was prepared in the same manner as in Example 1 except that polymer 2 (molecular weight: 14000) was used instead of polymer 1. The results are shown in Table 1.
- a device was produced in the same manner as in Example 1 except that polymer 4 (molecular weight: 270000) was used instead of polymer 1. The results are shown in Table 1.
- a device was prepared in the same manner as in Example 1 except that polymer 5 (molecular weight: 16000) was used instead of polymer 1. The results are shown in Table 1.
- a device was fabricated in the same manner as in Example 1 except that polymer 6 (molecular weight: 43000) was used instead of polymer 1. The results are shown in Table 1.
- a device was prepared in the same manner as in Example 1 except that Compound C was used instead of Compound A. The results are shown in Table 2.
- a device was prepared in the same manner as in Example 1 except that Compound D was used instead of Compound A. The results are shown in Table 2.
- a device was prepared in the same manner as in Example 1 except that Compound E was used instead of Compound A. The results are shown in Table 2.
- a device was prepared in the same manner as in Example 1 except that Compound F was used instead of Compound A. The results are shown in Table 2.
- a device was prepared in the same manner as in Example 1 except that Compound F was used instead of Compound A. The results are shown in Table 2.
- a glass substrate having a thickness of 25 mm ⁇ 75 mm ⁇ 1.1 mm and having an ITO transparent electrode (Zomatic) was ultrasonically cleaned in isopropyl alcohol for 5 minutes, followed by UV ozone cleaning for 30 minutes.
- Polyethylene dioxythiophene ⁇ polystyrene sulfonic acid (PEDOT ⁇ PSS) used for the hole injection layer was formed on the substrate by spin coating to a thickness of 1 OOnm.
- a hole transport layer having a thickness of 20 nm was formed by spin coating with a toluene solution (0.6 wt%) of polymer 1 (molecular weight: 145000), and dried at 170 ° C. for 30 minutes.
- the film thickness at this time was 50 nm.
- a 10 nm thick tris (8-quinolinol) aluminum film (hereinafter abbreviated as “Alq film”) was formed on this film.
- This Alq film functions as an electron transport layer.
- Li Li source: manufactured by SAES Getter Co., Ltd.
- Alq were binary evaporated to form an Alq: Li film as an electron injection layer (cathode).
- Alq Li film
- metal A1 was deposited to form a metal cathode, and an organic EL light emitting device was formed. This device emits blue light.
- Table 3 shows the voltage and luminous efficiency (cd / A) at lOOcdZm 2 and the luminance half time at an initial luminance of 1000 cd / m 2 .
- a device was fabricated in the same manner as in Example 9 except that polymer 3 (molecular weight: 50000) was used instead of polymer 1. The results are shown in Table 3.
- a device was prepared in the same manner as in Example 9 except that compound C was used instead of compound A. At this time, the device emitted blue light, the voltage at lOOcdZm 2 was 5.5 V, and the light emission efficiency was 5.8 cd / A.
- a device was prepared in the same manner as in Example 9 except that Compound E was used instead of Compound A. At this time, the device emitted blue light, the voltage at lOOcdZm 2 was 5.5 V, and the light emission efficiency was 5.2 cd / A.
- the aromatic amine compound of the present invention can be formed by wet process film having high solubility, and the organic EL device using the film exhibits various emission hues.
- the aromatic amine compound of the present invention which has high heat resistance, is used as a hole injecting / transporting material, the hole injecting / transporting property is high, the light emitting luminance and the light emitting efficiency are high, and the life is long.
- the organic EL device of the present invention is useful as a light source such as a flat light emitter of a wall-mounted television and a backlight of a display, which are highly practical.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06780803A EP1933396A1 (en) | 2005-09-08 | 2006-07-05 | Organic electroluminescent element using polyarylamine |
US12/066,333 US20090230848A1 (en) | 2005-09-08 | 2006-07-05 | Organic electroluminescent element using polyarylamine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-260562 | 2005-09-08 | ||
JP2005260562A JP2007073814A (ja) | 2005-09-08 | 2005-09-08 | ポリアリールアミンを用いた有機エレクトロルミネッセンス素子 |
Publications (1)
Publication Number | Publication Date |
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WO2007029410A1 true WO2007029410A1 (ja) | 2007-03-15 |
Family
ID=37835539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/313427 WO2007029410A1 (ja) | 2005-09-08 | 2006-07-05 | ポリアリールアミンを用いた有機エレクトロルミネッセンス素子 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090230848A1 (ja) |
EP (1) | EP1933396A1 (ja) |
JP (1) | JP2007073814A (ja) |
KR (1) | KR20080043815A (ja) |
CN (1) | CN101258623A (ja) |
TW (1) | TW200710199A (ja) |
WO (1) | WO2007029410A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010073598A (ja) * | 2008-09-22 | 2010-04-02 | Mitsubishi Chemicals Corp | 有機薄膜パターニング用基板、有機電界発光素子、有機el表示装置および有機el照明 |
JP2012528209A (ja) * | 2009-05-29 | 2012-11-12 | メルク パテント ゲーエムベーハー | 少なくとも1つの発光体化合物および共役遮断ユニットを有する少なくとも1つのポリマーを含む組成物 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006190759A (ja) * | 2005-01-05 | 2006-07-20 | Idemitsu Kosan Co Ltd | 有機エレクトロルミネッセンス素子 |
US8436343B2 (en) | 2007-07-07 | 2013-05-07 | Idemitsu Kosan Co., Ltd. | Organic EL device |
WO2009008349A1 (ja) * | 2007-07-07 | 2009-01-15 | Idemitsu Kosan Co., Ltd. | 有機el素子および有機el材料含有溶液 |
EP2166592A4 (en) | 2007-07-07 | 2012-04-18 | Idemitsu Kosan Co | ORGANIC EL DEVICE |
WO2009008344A1 (ja) | 2007-07-07 | 2009-01-15 | Idemitsu Kosan Co., Ltd. | 有機el素子 |
EP2213639B1 (en) * | 2007-11-19 | 2016-04-13 | Idemitsu Kosan Co., Ltd. | Monobenzochrysene derivatives and their use in materials for organic electroluminescent devices |
JP2010212441A (ja) * | 2009-03-10 | 2010-09-24 | Mitsubishi Chemicals Corp | 有機電界発光素子、有機elディスプレイおよび有機el照明 |
TWI538561B (zh) * | 2009-10-22 | 2016-06-11 | 住友化學股份有限公司 | 有機電激發光元件 |
KR20130046435A (ko) * | 2010-07-21 | 2013-05-07 | 도판 인사츠 가부시키가이샤 | 유기 일렉트로루미네센스 소자 |
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JPH04308688A (ja) | 1991-04-08 | 1992-10-30 | Pioneer Electron Corp | 有機エレクトロルミネッセンス素子 |
JPH05247459A (ja) * | 1992-03-09 | 1993-09-24 | Idemitsu Kosan Co Ltd | 有機エレクトロルミネッセンス素子 |
JP2004500468A (ja) * | 2000-03-10 | 2004-01-08 | ケンブリッジ ディスプレイ テクノロジー リミテッド | コポリマー |
JP2003151774A (ja) * | 2001-11-14 | 2003-05-23 | Toray Ind Inc | 発光素子 |
WO2004018587A1 (ja) * | 2002-08-23 | 2004-03-04 | Idemitsu Kosan Co., Ltd. | 有機エレクトロルミネッセンス素子及びアントラセン誘導体 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010073598A (ja) * | 2008-09-22 | 2010-04-02 | Mitsubishi Chemicals Corp | 有機薄膜パターニング用基板、有機電界発光素子、有機el表示装置および有機el照明 |
JP2012528209A (ja) * | 2009-05-29 | 2012-11-12 | メルク パテント ゲーエムベーハー | 少なくとも1つの発光体化合物および共役遮断ユニットを有する少なくとも1つのポリマーを含む組成物 |
US9099655B2 (en) | 2009-05-29 | 2015-08-04 | Merck Patent Gmbh | Composition comprising at least one emitter compound and at least one polymer having conjugation-interrupting units |
Also Published As
Publication number | Publication date |
---|---|
JP2007073814A (ja) | 2007-03-22 |
US20090230848A1 (en) | 2009-09-17 |
CN101258623A (zh) | 2008-09-03 |
EP1933396A1 (en) | 2008-06-18 |
KR20080043815A (ko) | 2008-05-19 |
TW200710199A (en) | 2007-03-16 |
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